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1 /* header file for DIO boards for the HP300 architecture. |
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2 * Maybe this should handle DIO-II later? |
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3 * The general structure of this is vaguely based on how |
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4 * the Amiga port handles Zorro boards. |
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5 * Copyright (C) Peter Maydell 05/1998 <pmaydell@chiark.greenend.org.uk> |
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6 * Converted to driver model Jochen Friedrich <jochen@scram.de> |
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7 * |
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8 * The board IDs are from the NetBSD kernel, which for once provided |
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9 * helpful comments... |
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10 * |
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11 * This goes with drivers/dio/dio.c |
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12 */ |
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13 |
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14 #ifndef _LINUX_DIO_H |
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15 #define _LINUX_DIO_H |
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16 |
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17 /* The DIO boards in a system are distinguished by 'select codes' which |
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18 * range from 0-63 (DIO) and 132-255 (DIO-II). |
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19 * The DIO board with select code sc is located at physical address |
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20 * 0x600000 + sc * 0x10000 |
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21 * So DIO cards cover [0x600000-0x800000); the areas [0x200000-0x400000) and |
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22 * [0x800000-0x1000000) are for additional space required by things |
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23 * like framebuffers. [0x400000-0x600000) is for miscellaneous internal I/O. |
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24 * On Linux, this is currently all mapped into the virtual address space |
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25 * at 0xf0000000 on bootup. |
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26 * DIO-II boards are at 0x1000000 + (sc - 132) * 0x400000 |
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27 * which is address range [0x1000000-0x20000000) -- too big to map completely, |
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28 * so currently we just don't handle DIO-II boards. It wouldn't be hard to |
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29 * do with ioremap() though. |
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30 */ |
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31 |
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32 #include <linux/device.h> |
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33 |
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34 #ifdef __KERNEL__ |
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35 |
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36 #include <asm/hp300hw.h> |
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37 |
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38 typedef __u16 dio_id; |
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39 |
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40 /* |
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41 * DIO devices |
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42 */ |
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43 |
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44 struct dio_dev { |
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45 struct dio_bus *bus; |
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46 dio_id id; |
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47 int scode; |
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48 struct dio_driver *driver; /* which driver has allocated this device */ |
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49 struct device dev; /* Generic device interface */ |
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50 u8 ipl; |
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51 char name[64]; |
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52 struct resource resource; |
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53 }; |
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54 |
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55 #define to_dio_dev(n) container_of(n, struct dio_dev, dev) |
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56 |
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57 /* |
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58 * DIO bus |
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59 */ |
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60 |
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61 struct dio_bus { |
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62 struct list_head devices; /* list of devices on this bus */ |
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63 unsigned int num_resources; /* number of resources */ |
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64 struct resource resources[2]; /* address space routed to this bus */ |
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65 struct device dev; |
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66 char name[10]; |
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67 }; |
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68 |
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69 extern struct dio_bus dio_bus; /* Single DIO bus */ |
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70 extern struct bus_type dio_bus_type; |
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71 |
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72 /* |
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73 * DIO device IDs |
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74 */ |
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75 |
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76 struct dio_device_id { |
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77 dio_id id; /* Device ID or DIO_WILDCARD */ |
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78 unsigned long driver_data; /* Data private to the driver */ |
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79 }; |
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80 |
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81 /* |
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82 * DIO device drivers |
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83 */ |
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84 |
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85 struct dio_driver { |
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86 struct list_head node; |
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87 char *name; |
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88 const struct dio_device_id *id_table; /* NULL if wants all devices */ |
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89 int (*probe)(struct dio_dev *z, const struct dio_device_id *id); |
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90 /* New device inserted */ |
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91 void (*remove)(struct dio_dev *z); /* Device removed (NULL if not a hot-plug capable driver) */ |
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92 struct device_driver driver; |
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93 }; |
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94 |
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95 #define to_dio_driver(drv) container_of(drv, struct dio_driver, driver) |
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96 |
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97 /* DIO/DIO-II boards all have the following 8bit registers. |
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98 * These are offsets from the base of the device. |
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99 */ |
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100 #define DIO_IDOFF 0x01 /* primary device ID */ |
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101 #define DIO_IPLOFF 0x03 /* interrupt priority level */ |
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102 #define DIO_SECIDOFF 0x15 /* secondary device ID */ |
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103 #define DIOII_SIZEOFF 0x101 /* device size, DIO-II only */ |
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104 #define DIO_VIRADDRBASE 0xf0000000UL /* vir addr where IOspace is mapped */ |
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105 |
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106 #define DIO_BASE 0x600000 /* start of DIO space */ |
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107 #define DIO_END 0x1000000 /* end of DIO space */ |
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108 #define DIO_DEVSIZE 0x10000 /* size of a DIO device */ |
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109 |
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110 #define DIOII_BASE 0x01000000 /* start of DIO-II space */ |
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111 #define DIOII_END 0x20000000 /* end of DIO-II space */ |
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112 #define DIOII_DEVSIZE 0x00400000 /* size of a DIO-II device */ |
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113 |
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114 /* Highest valid select code. If we add DIO-II support this should become |
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115 * 256 for everything except HP320, which only has DIO. |
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116 */ |
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117 #define DIO_SCMAX (hp300_model == HP_320 ? 32 : 256) |
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118 #define DIOII_SCBASE 132 /* lowest DIO-II select code */ |
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119 #define DIO_SCINHOLE(scode) (((scode) >= 32) && ((scode) < DIOII_SCBASE)) |
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120 #define DIO_ISDIOII(scode) ((scode) >= 132 && (scode) < 256) |
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121 |
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122 /* macros to read device IDs, given base address */ |
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123 #define DIO_ID(baseaddr) in_8((baseaddr) + DIO_IDOFF) |
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124 #define DIO_SECID(baseaddr) in_8((baseaddr) + DIO_SECIDOFF) |
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125 |
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126 /* extract the interrupt level */ |
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127 #define DIO_IPL(baseaddr) (((in_8((baseaddr) + DIO_IPLOFF) >> 4) & 0x03) + 3) |
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128 |
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129 /* find the size of a DIO-II board's address space. |
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130 * DIO boards are all fixed length. |
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131 */ |
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132 #define DIOII_SIZE(baseaddr) ((in_8((baseaddr) + DIOII_SIZEOFF) + 1) * 0x100000) |
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133 |
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134 /* general purpose macro for both DIO and DIO-II */ |
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135 #define DIO_SIZE(scode, base) (DIO_ISDIOII((scode)) ? DIOII_SIZE((base)) : DIO_DEVSIZE) |
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136 |
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137 /* The hardware has primary and secondary IDs; we encode these in a single |
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138 * int as PRIMARY ID & (SECONDARY ID << 8). |
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139 * In practice this is only important for framebuffers, |
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140 * and everybody else just sets ID fields equal to the DIO_ID_FOO value. |
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141 */ |
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142 #define DIO_ENCODE_ID(pr,sec) ((((int)sec & 0xff) << 8) | ((int)pr & 0xff)) |
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143 /* macro to determine whether a given primary ID requires a secondary ID byte */ |
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144 #define DIO_NEEDSSECID(id) ((id) == DIO_ID_FBUFFER) |
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145 #define DIO_WILDCARD 0xff |
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146 |
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147 /* Now a whole slew of macros giving device IDs and descriptive strings: */ |
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148 #define DIO_ID_DCA0 0x02 /* 98644A serial */ |
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149 #define DIO_DESC_DCA0 "98644A DCA0 serial" |
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150 #define DIO_ID_DCA0REM 0x82 /* 98644A serial */ |
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151 #define DIO_DESC_DCA0REM "98644A DCA0REM serial" |
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152 #define DIO_ID_DCA1 0x42 /* 98644A serial */ |
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153 #define DIO_DESC_DCA1 "98644A DCA1 serial" |
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154 #define DIO_ID_DCA1REM 0xc2 /* 98644A serial */ |
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155 #define DIO_DESC_DCA1REM "98644A DCA1REM serial" |
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156 #define DIO_ID_DCM 0x05 /* 98642A serial MUX */ |
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157 #define DIO_DESC_DCM "98642A DCM serial MUX" |
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158 #define DIO_ID_DCMREM 0x85 /* 98642A serial MUX */ |
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159 #define DIO_DESC_DCMREM "98642A DCMREM serial MUX" |
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160 #define DIO_ID_LAN 0x15 /* 98643A LAN */ |
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161 #define DIO_DESC_LAN "98643A LANCE ethernet" |
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162 #define DIO_ID_FHPIB 0x08 /* 98625A/98625B fast HP-IB */ |
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163 #define DIO_DESC_FHPIB "98625A/98625B fast HPIB" |
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164 #define DIO_ID_NHPIB 0x01 /* 98624A HP-IB (normal ie slow) */ |
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165 #define DIO_DESC_NHPIB "98624A HPIB" |
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166 #define DIO_ID_SCSI0 0x07 /* 98265A SCSI */ |
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167 #define DIO_DESC_SCSI0 "98265A SCSI0" |
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168 #define DIO_ID_SCSI1 0x27 /* ditto */ |
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169 #define DIO_DESC_SCSI1 "98265A SCSI1" |
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170 #define DIO_ID_SCSI2 0x47 /* ditto */ |
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171 #define DIO_DESC_SCSI2 "98265A SCSI2" |
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172 #define DIO_ID_SCSI3 0x67 /* ditto */ |
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173 #define DIO_DESC_SCSI3 "98265A SCSI3" |
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174 #define DIO_ID_FBUFFER 0x39 /* framebuffer: flavour is distinguished by secondary ID */ |
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175 #define DIO_DESC_FBUFFER "bitmapped display" |
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176 /* the NetBSD kernel source is a bit unsure as to what these next IDs actually do :-> */ |
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177 #define DIO_ID_MISC0 0x03 /* 98622A */ |
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178 #define DIO_DESC_MISC0 "98622A" |
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179 #define DIO_ID_MISC1 0x04 /* 98623A */ |
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180 #define DIO_DESC_MISC1 "98623A" |
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181 #define DIO_ID_PARALLEL 0x06 /* internal parallel */ |
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182 #define DIO_DESC_PARALLEL "internal parallel" |
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183 #define DIO_ID_MISC2 0x09 /* 98287A keyboard */ |
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184 #define DIO_DESC_MISC2 "98287A keyboard" |
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185 #define DIO_ID_MISC3 0x0a /* HP98635A FP accelerator */ |
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186 #define DIO_DESC_MISC3 "HP98635A FP accelerator" |
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187 #define DIO_ID_MISC4 0x0b /* timer */ |
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188 #define DIO_DESC_MISC4 "timer" |
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189 #define DIO_ID_MISC5 0x12 /* 98640A */ |
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190 #define DIO_DESC_MISC5 "98640A" |
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191 #define DIO_ID_MISC6 0x16 /* 98659A */ |
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192 #define DIO_DESC_MISC6 "98659A" |
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193 #define DIO_ID_MISC7 0x19 /* 237 display */ |
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194 #define DIO_DESC_MISC7 "237 display" |
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195 #define DIO_ID_MISC8 0x1a /* quad-wide card */ |
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196 #define DIO_DESC_MISC8 "quad-wide card" |
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197 #define DIO_ID_MISC9 0x1b /* 98253A */ |
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198 #define DIO_DESC_MISC9 "98253A" |
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199 #define DIO_ID_MISC10 0x1c /* 98627A */ |
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200 #define DIO_DESC_MISC10 "98253A" |
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201 #define DIO_ID_MISC11 0x1d /* 98633A */ |
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202 #define DIO_DESC_MISC11 "98633A" |
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203 #define DIO_ID_MISC12 0x1e /* 98259A */ |
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204 #define DIO_DESC_MISC12 "98259A" |
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205 #define DIO_ID_MISC13 0x1f /* 8741 */ |
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206 #define DIO_DESC_MISC13 "8741" |
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207 #define DIO_ID_VME 0x31 /* 98577A VME adapter */ |
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208 #define DIO_DESC_VME "98577A VME adapter" |
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209 #define DIO_ID_DCL 0x34 /* 98628A serial */ |
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210 #define DIO_DESC_DCL "98628A DCL serial" |
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211 #define DIO_ID_DCLREM 0xb4 /* 98628A serial */ |
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212 #define DIO_DESC_DCLREM "98628A DCLREM serial" |
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213 /* These are the secondary IDs for the framebuffers */ |
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214 #define DIO_ID2_GATORBOX 0x01 /* 98700/98710 "gatorbox" */ |
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215 #define DIO_DESC2_GATORBOX "98700/98710 \"gatorbox\" display" |
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216 #define DIO_ID2_TOPCAT 0x02 /* 98544/98545/98547 "topcat" */ |
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217 #define DIO_DESC2_TOPCAT "98544/98545/98547 \"topcat\" display" |
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218 #define DIO_ID2_RENAISSANCE 0x04 /* 98720/98721 "renaissance" */ |
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219 #define DIO_DESC2_RENAISSANCE "98720/98721 \"renaissance\" display" |
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220 #define DIO_ID2_LRCATSEYE 0x05 /* lowres "catseye" */ |
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221 #define DIO_DESC2_LRCATSEYE "low-res catseye display" |
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222 #define DIO_ID2_HRCCATSEYE 0x06 /* highres colour "catseye" */ |
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223 #define DIO_DESC2_HRCCATSEYE "high-res color catseye display" |
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224 #define DIO_ID2_HRMCATSEYE 0x07 /* highres mono "catseye" */ |
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225 #define DIO_DESC2_HRMCATSEYE "high-res mono catseye display" |
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226 #define DIO_ID2_DAVINCI 0x08 /* 98730/98731 "davinci" */ |
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227 #define DIO_DESC2_DAVINCI "98730/98731 \"davinci\" display" |
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228 #define DIO_ID2_XXXCATSEYE 0x09 /* "catseye" */ |
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229 #define DIO_DESC2_XXXCATSEYE "catseye display" |
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230 #define DIO_ID2_HYPERION 0x0e /* A1096A "hyperion" */ |
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231 #define DIO_DESC2_HYPERION "A1096A \"hyperion\" display" |
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232 #define DIO_ID2_XGENESIS 0x0b /* "x-genesis"; no NetBSD support */ |
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233 #define DIO_DESC2_XGENESIS "\"x-genesis\" display" |
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234 #define DIO_ID2_TIGER 0x0c /* "tiger"; no NetBSD support */ |
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235 #define DIO_DESC2_TIGER "\"tiger\" display" |
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236 #define DIO_ID2_YGENESIS 0x0d /* "y-genesis"; no NetBSD support */ |
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237 #define DIO_DESC2_YGENESIS "\"y-genesis\" display" |
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238 /* if you add new IDs then you should tell dio.c about them so it can |
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239 * identify them... |
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240 */ |
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241 |
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242 extern int dio_find(int deviceid); |
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243 extern unsigned long dio_scodetophysaddr(int scode); |
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244 extern void dio_create_sysfs_dev_files(struct dio_dev *); |
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245 |
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246 /* New-style probing */ |
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247 extern int dio_register_driver(struct dio_driver *); |
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248 extern void dio_unregister_driver(struct dio_driver *); |
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249 extern const struct dio_device_id *dio_match_device(const struct dio_device_id *ids, const struct dio_dev *z); |
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250 static inline struct dio_driver *dio_dev_driver(const struct dio_dev *d) |
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251 { |
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252 return d->driver; |
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253 } |
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254 |
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255 #define dio_resource_start(d) ((d)->resource.start) |
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256 #define dio_resource_end(d) ((d)->resource.end) |
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257 #define dio_resource_len(d) ((d)->resource.end-(d)->resource.start+1) |
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258 #define dio_resource_flags(d) ((d)->resource.flags) |
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259 |
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260 #define dio_request_device(d, name) \ |
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261 request_mem_region(dio_resource_start(d), dio_resource_len(d), name) |
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262 #define dio_release_device(d) \ |
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263 release_mem_region(dio_resource_start(d), dio_resource_len(d)) |
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264 |
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265 /* Similar to the helpers above, these manipulate per-dio_dev |
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266 * driver-specific data. They are really just a wrapper around |
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267 * the generic device structure functions of these calls. |
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268 */ |
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269 static inline void *dio_get_drvdata (struct dio_dev *d) |
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270 { |
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271 return dev_get_drvdata(&d->dev); |
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272 } |
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273 |
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274 static inline void dio_set_drvdata (struct dio_dev *d, void *data) |
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275 { |
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276 dev_set_drvdata(&d->dev, data); |
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277 } |
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278 |
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279 #endif /* __KERNEL__ */ |
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280 #endif /* ndef _LINUX_DIO_H */ |